ul {
    list-style: none;
    width: 600px;
    height: 30px;
    position: absolute;
    top: 82%;
    left: 37.5%;
    z-index: 651;
}

.xuan {
    float: left;
    width: 80px;
    height: 30px;
    line-height: 30px;
    text-align: center;
    border: 5px solid rgb(192, 127, 75);
    font-size: 30px;
    margin-right: 40px;
    margin-bottom: 30px;
    position: relative;
}

.xuan:hover {
    cursor: pointer;
}

.duicuo {
    width: 60px;
    height: 60px;
    position: absolute;
    top: -15px;
    left: 15px;
    opacity: 0.7;
}